Combined attachment plug and base.



M. NORDEN.

COMBINED ATTACHMENT PLUG AND BASE.

APPLICATION FILED NOV.7

hiented Aim 24:, 1915.

4 W9 TM Hi5 A TTORA ETS.

MORTIMER NOBDEN, F NE'W YORK, N. Y.,

YORK, N. Y.

COMBINED ATTACI-IIEEN'Z PLUG .ciND BASE.

Specification of Letters latent.

Patented i542,

Application filed. November *1, 1913. Serial No. 799.659.

Be it known that T. lvlon'rninn Nonnnn'. a citizen of the l nited States. residing at the borough of Manhattan. in the city. county, and State of New York. have invented an improvement in Combined Attachment Plugs and Bases, of which the following is a specification.

My invention relates to a combined electrical attachment plug and base, and its object is to provide means for connecting'an extension or bi ch at any desired place in an electric maii The details and peration of the invention are hereinafter particularly described.

In the accompanying drawing Figure 1 is an elevation of my combined attachment plug and base connected together. Fig. 2 is a plan view oi the same in which the main conductor wires are shown in broken lines. Fig. 3 is a vertical section on the line a: a: of Fig. 2, showing the plug and base attached to a connection box. and 4 shows in vertical. section a modified form of connecting the branch wires with the plug.

Similar reference numerals indifate like parts throughout the several views.

The plug 1 and its base 2 are both made of porcelain or other insulating material. The base 2 is preferably of circular formation, having an integral flange 3. and a central opening 4 with oppositely disposed. rccesses 5 for the reception of the plug 1 and its contact pieces.

6 6 are lugs of insulating? materi il, prererably made integral with the base. one of which lugs'projects in line with the side wall of one of the recesses 5 at its right hand side, while the other lug: projects in line with the other recess 5 at its left hand side.

7 7 are spring contact clips of metal located upon the top surface of the base 2, which clips are curved to conform to the shape of the base and' the central opening therein. The free ends o1 these spring contact clips 7 are bent slightly upward for the purpose hereafter described. 8 8 are metallic contact plates arranged adjacent to the respective lugs 3, and'placedo er and in contact with one end of each of the said spring contact clips 7. Screw's'9 pass through holes in the base and clips and screw into screw threaded holes in the plates 8.

1O 10 are metallic binding screws ing into screw threaded openings e plates 8 and through openings in the clips 7 and into screw threaded openings in is base. These binding; screws 10 are for 1 ing the main line wires 11 to the plates 0 on the base 2, the insulating material being removed from said wiresa short distance b0 allow the bared portions of the wires to be looped around the binding screws 16 under their heads, so that when the screws are forced down to place the main wires are brought into intimate contact with the plates; one end of each plate 8 is upturned to assist in holding the bared line wires in position. The flange 3 of the base is provided with screw holes 12 the base to a connection be 13. or other foundation by screws The plug 1 has a neck or portion of duced diameter 15 adapted to enter and the central opening 4-, in the base 2. The is a central opening; 16 extendinpg'entire through the plug; 1 through which pass the branch conductor wires 17. On the opposiu sides of this central opening in the plug.

there are recesses 18 18 of a depth appro7 iniately h alf the length of the plug. in each of these, recesses 18 there is inserted a metal rod 19 of a length and diameter to entirely fill and close such recesses. The ends of these rods 19 project slightly outside the recesses 18 at the top of the plug and are provided with integral contact pieces 20, which extend at right angles a predetermined distance beyond the outer surface of the neck of the plug.

i The metal rods 19 are firmly secured within therecesses' 18 by the set screws 21. which pass through holes in the sides of the plug and into screw-threaded holes in the rods. The heads of such screws being countersunk in the neck of the plug. in the upper end of each rod 19 there is a. screw-threaded hole to receive the binding screws 22.

The insulating material is removed from the ends of the branch conductor wires 17 projecting beyond the top of the plug '1, and the bared wires are twisted around the binding' screws 22, which are then screwed down sothat intimate contact 18 made with the right angled contact pieces 20 of the rods 1. in connecting the plug 1' with the base 2, the right angled contact pieces 20 are for the attachment of I jpie ScLl into the ccni ml In 3 f the tratcd h1 3 clcvicc as ccsscs 18 "bhrcu rh ihc alu c bZOUgllli in line with *hc recess-c base and him nccli 1h 05: the pic 53;) ha vc 011i the i'cccss i surfaces are, but slightly raiscil Ircm top surface of hhc has New by giving he can 13210.1; pieces will pass under the s ciin contact clips; 7 and. rcma in in iziifiiimte cont-201. thcicwiijh, thus l ci'ming ch ii iii ml and SlQGllllCiil lbs base.

i 4 :ps i pug Hgc 9f inc mini-act pic the clips. will be SQQE]. that hhc l'u 's 6 m-cvc'nt the in" icing minted in ilic Wi'ciig direction.

drawing l have illusattachecl to connection box, but ii is @bvicus 'iI-lllll thc base may be ,siccuiccl "m anysizitablc support.

i'Vhile .l prefer t0 connect bhe 'JllilCll wires 17', with ihc plug in the mzmncr SllOWI in Figs. 1, 2 and 3, and as abmc Clcsscribccl, they may be connected in the manner shown in 'Whm'cby the cciiitifal ()Pfillllig in thc plug, and the binding srcivs 22 ii-e ilS-- pciisccl with. In s h czm insteaa'l of the rcthc bcrcs are cnflccl entirely wing tvc spa apart lc igistudiiml cp iiic F rods 19 are inscr'tci'l chi manner as z bcvc 0 has a cciitri branch filllfili .5.

c cubed buc mil be? 'sviih m0 spaced clan-gated reccsses longit-w clinally disposed, metallic rods filling said *csses and pr jccting thci-cf'rcm at the top 1 an zighi; angles to the plug in opposite direciicns, branch Wires connected with said metallic rods, in combination with a base of insulafiing iTk'liliIQllHl having openings for the cssn'gc cl? Sill-Ll plug and right angled proactions, contact plates for connection with in, electric main secured to said base, metal lic'spi-ing clips in ccniact with said plates and secured to ihe basc and pcsitionecl so cvcrlic and contact with said right angled pi-ojections 11 a partial rctution cf the plug and secure said projections between the clips and base. v

2. A. plug of insulating material prcvided with two Spaced elongated recesses longi tudinally dispcsecl, metallic rods within said i'cccsses and projecting therefrom at the top at right angles $0 the plug in opposite direcons, branch Wires connected with said inc- 1 s, in COII'llJlillblOl]. with a base of msulziiiin wih a, recess (in two opposite sides thereof for the passage said plug and light anglcrl pr M0115, 9, lug base in line with the righi siclc Wall of one cf said recesses, another lug projecting from said base in line with the lci't siclc wall of the nth-2i i'cccss, ccnfizicl' plates .fci' ccnnccbion with an clcciiric main scciii'ccl lf-c said base, metallic spring plaics and secured the base in a position '50 overlie and contact with said right angled pi'cjccticns G11 pai'i'al rotation of the plug and secure said projection between the clips 92ml base.

Signed by me this 2551 Gay Bim'rrL-i MARIE ma terial bavin a central 0 cnin' I clips in contact with said projecting from said 

